Human Body

A leech's saliva has a numbing chemical so that its victim cannot feel its bite. Its saliva also has a chemical that dilates blood vessels around the wound, allowing more blood to flow. A third chemical, hirudin, prevents blood from clotting. When the leech is full, it drops off\x97but because of hirudin, the wound can ooze blood for up to 24 hours. Leeches can eat five times their body weight in blood.

Add to Favs Email This Share on FB

rate this fact
  One More !  

Search

Amazing (200) America (274) Animal (433) Best (18) Engineering (13) English Language (23) Famous (20)

Fun (34) Great (42) Highest (28) Human Body (2,500) Interesting (2,332) Largest (100) Least (24)

Longest (39) Lowest (6) Math (18) Most (119) Nature (13) Oldest (20) Popular (45)

Random (452) Real (886) Science (21) Smallest (16) Sports (76) Time (15) World War II (61)

Amazing (200) America (274) Animal (433) Best (18) Engineering (13) English Language (23) Famous (20) Fun (34) Great (42) Highest (28) Human Body (2,500) Interesting (2,332) Largest (100) Least (24)

Longest (39) Lowest (6) Math (18) Most (119) Nature (13) Oldest (20) Popular (45) Random (452) Real (886) Science (21) Smallest (16) Sports (76) Time (15) World War II (61)

by TimeWasters, LLC:
7,828 interesting facts by Facts&Co
180,527 famous quotes by Quotes&Co
62,947 proverbs from all over the world by Proverbs&Co

Traffic analysis by Web-Stat